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Light bullets in waveguide arrays: spacetimecoupling, spectral symmetry breaking and superluminal decay [Invited]
We investigate the effects of the space-time coupling (STC) on the nonlinear formation and propagation of Light Bullets, spatiotemporal solitons in which dispersion and diffraction along all dimensions...
PublicationsHigh precision micro-displacement fiber sensor through a suspended-core Sagnac interferometer
A sensing system for micro-displacement measurement based in a suspended-core fiber Sagnac interferometer is presented. The suspended-core fiber characterization was made through the use of an optical...
PublicationsDesign von Hochleistungstransportfasern mit wenigen Moden
Die mit Glasfasern übertragbare optische Leistung ist begrenzt durch Materialschädigungen und das Auftreten nichtlinearer optischer Effekte bei zu hoher Spitzenintensität, deren Reduzierung durch eine...
PublicationsInfluence of the contacting scheme in simulations of radial silicon nanorod solar cells
Silicon nanorod solar cells were simulated using the Silvaco Technical Computer Aided Design (TCAD) software suite. For reasons of speed optimization the simulations were performed in cylinder coordinates...
PublicationsPreparation and Characterization of Multicore SERS Labels by Controlled Aggregation of Gold Nanoparticles
Optimized labels for surface enhanced Raman spectroscopy (SERS) give comparable sensitivities than fluorescence labels. Most important advantages of the SERS approach are the narrow width of Raman bands...
PublicationsIn vivo imaging of hepatic excretory function in the rat by fluorescence microscopy
Applying intravital fluorescence microscopy, we assessed sinusoidal delivery and biliary clearance of two different polymethine dyes. DY635, a benzopyrylium-based hemocyanine dye with shorter excitation...
PublicationsInfluence of Surface Treatment and Passivation on Photoluminescence of Wet Chemically Etched Silicon
Wet Chemical Etching (WCE) of Silicon is an adaptable method to create either films of freestanding nanowires on a silicon substrate or to produce spongy porous silicon structures. Especially the first...
PublicationsSimulation of Symmetrically Doped Silicon Nanowire Solar Cells
Silicon nanowire solar cells were simulated using the Silvaco TCAD software kit. For optimization of speed the simulations were performed in cylinder coordinates with cylindrical symmetry. Symmetric doping...
PublicationsIncreased flux pinning in YBa2Cu3O7−delta thin-film devices through embedding of Au nano crystals
We prepared direct-current superconducting quantum interference device (dc-SQUID) gradiometers consisting of a single YBa2Cu3O7− (YBCO) layer on SrTiO3 (STO) bicrystal substrates. The superconducting...
PublicationsInfluence of multiple protonation on the initial excitation in a black dye
Solvent pH influences electronic and optical properties of photoactive systems by protonation/deprotonation of basic/acidic positions. In this study a joint experimental and theoretical approach is presented...
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